blue jeans

Fuel-efficient driving on your iPhone: Consumer Reports’ new listing of smart phone apps for drivers includes Greenmeter, an iPhone app that “…monitors your driving and displays your car’s mpg, fuel cost, and carbon emissions.”
Is that a secret for more efficient solar cells in your pants…? No, not a really bad, geeky joke: researchers at Cornell have discovered a specific molecule “in blue jeans and some ink dyes” that could be used to build frameworks for cheaper solar cells. (via Treehugger)